i1153 Intro fix

Signed-off-by: Michal Maléř <mmaler@redhat.com>

src/main/pages/che-7/hands-on-guidance/assembly_using-a-visual-studio-code-extension-in-che.adoc

@@ -57,7 +57,7 @@ endif::[]
 
 Starting with Eclipse Che 7, VisualStudio Code extensions can be installed to extend the functionality of a Che workspace. VS Code extension can run in the Che editor container, or they can be packaged in their own isolated and pre-configured containers with their prerequisites.
 
-This document describes the usage of the VS Code extension in Che with workspaces Che Plugins panel and how you can publish the VS Code extension in a plug-in registry.  By doing so, you can share the extension with other Che users. Note that the extension hosting sidecar container and the use of the extension in a devfile are required for this.
+This document describes the usage of the VS Code extension in Che with workspaces Che Plugins panel and how you can publish the VS Code extension in a plug-in registry.  By doing so, you can share the extension with other Che users. Note that the extension hosting sidecar container and the use of the extension in a devfile are optional for this.
 
 In addition, you can review the compatibility of the VS Code extensions so that you can be informed whether a specific API is supported or has not been implemented yet.
 // The following include statements pull in the module files that comprise